11
5.3 Sensor
Maintenance of the sensor itself is confined to periodic checks of cable connections
and maintenance of terminals. The transducers themselves can not be opened for
inspection.
6. Trouble Shooting __________________________________________________
If a unit fails to read, the following steps should be taken:
1. Check the coil resistance. Nominal coil resistance is 180
Ω
±
10 plus cable
resistance
(22 gage copper = approximately 15
Ω
per 1000 feet).
a.) If the resistance is high or infinite, a cut cable must be suspected.
b.) If the resistance is low or near zero, a short must be suspected.
c.) If resistance’s are within nominal and no readings are obtainable on any
transducer, the readout is suspect
and the factory should be consulted.
d.) If all resistance’s are within nominal and no readings are obtainable on any
transducer, the readout is
suspect and the factory should be consulted.
2.
If cuts or shorts are located, the cable may be spliced in accordance with
recommended procedures.
